The infinitive is the basic, unconjugated
form of a verb, sometimes called the name of the verb. In English the
infinitive is to + verb: to talk, to eat, to leave, etc. The
Spanish infinitive is a single word with one
of the following endings: -ar, -er, or -ir: hablar, comer, salir, etc. We
usually learn Spanish verbs in the infinitive,
since that is what you start with in order to conjugate them.
The Spanish infinitive is often
translated to the English present participle, as
you'll see in the examples below.
El infinitivo can be used several
different ways without any conjugation.
As a noun - the
subject or object of a sentence
Mentir no es buena idea.
Lying is not a good idea.
Aprender es importante.
Learning is important.
After a conjugated verb,
the infinitive can be used